Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(1, 1)}
B. infinitely many solutions; {
x + y = 6} or {
x = -y}
C. {(1, 5)}
D. no solution; ?
Answer: D
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Decide whether the statement makes sense. Explain your reasoning.Whether it's a problem in mathematics or something else, I always find it's best to complete the work by looking back to check, interpret, and explain my solution.
What will be an ideal response?
Find the approximate value of the expression, rounded to four decimal places.
A. 0.3365 B. 0.3190 C. 0.9478 D. 0.9690
Perform the indicated operations. Simplify the answer.
A. 2i
B. i
C. 
D. 
The Acme Class Ring Company designs and sells two types of rings: the VIP and the SST. They can produce up to 24 rings each day using up to 60 total man-hours of labor. It takes 3 man-hours to make one VIP ring, versus 2 man-hours to make one SST ring.How many of each type of ring should be made daily in order to maximize the company's profit, if the profit on a VIP ring is $50 and the profit on an SST ring is $40?
A. 10 VIP and 14 SST B. 20 VIP and 4 SST C. 12 VIP and 12 SST D. 14 VIP and 10 SST